Transistor linear 430-440 mhz power amplifier 400 w (11 pages)
Summary of Contents for eb104 EB1200
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User's manual Transistor linear HF power amplifier 1200 W Model EB1200...
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This will allow you to reduce the risk of failure of this product. The EB1200 is a transistor HF linear power amplifier designed for use with amateur radio stations. Distinctive features of the EB1200 amplifier: instant readiness for operation;...
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Functional features of the EB1200 amplifier The built-in potentiometers in the protection circuit and the BIAS voltage control circuit are set to the correct position during equipment setup and testing. Spontaneously changing the position of these potentiometers will lead to the need to readjust the amplifier using precision measuring instruments.
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Output impedance 50 Ohm (unbalanced ) Output/Input connectors UHF SO-239 Amplifier circuit push-pull, class AB Output transistor LDMOS 255(h) x 210 x 240 mm Size Weight (kg) Equipment: HF linear amplifier EB1200 1 pc Power wire Users manual 1 pc...
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Front Panel Description Rocker switch to turn the power amplifier on and off. 2. Indication and control: Power output W – output power indicator SWR — VSWR level Current A – current in amperes Temperature – amplifier temperature in degrees Celsius ...
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12-10 — 24/28 MHz 6 — 50-54 MHz AUTO – automatic range switching mode when using an external device (automatic decoder) Turn the amplifier off and on again to reset the protection circuit. Rear Panel Description OUT - RF connector for antenna connection. CONTROL - connector for power amplifier control signals (band selection, transmission signal).
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Control cable connection Control connector pinouts: Contact circuit 160m, GND connection includes 1.8MHz band filter 40м, GND connection includes 7MHzband filter 6м, GND connection includes 54MHz band filter 15м, GND connection includes 21/18МHz band filter 80м, GND connection includes 3.5МHz band filter 20м, GND connection includes 14/10МHz band filter 10м, GND connection includes 28/24МHz band filter 12, 13...
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EB1200 Power Amplifier Protection Circuits Overheat protection. If the temperature of the aluminum cooling radiator exceeds + 45C, the PWM system will smoothly increase the fan speed. When the radiator temperature reaches + 60C, the PTT circuit is broken and it will be impossible to turn on the amplifier for transmission, until it cools down to + 50C.
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